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To create a throwing task group, call the with method.
Don’t use a task group from outside the task where you created it. In most cases, the Swift type system prevents a task group from escaping like that because adding a child task to a task group is a mutating operation, and mutation operations can’t be performed from concurrent execution contexts like a child task.
For information about the language-level concurrency model that Throwing is part of, see Concurrency in The Swift Programming Language.
func addTask (priority: TaskPriority?, operation: @Sendable () -> ChildTaskResult) func addTaskUnlessCancelled (priority: TaskPriority?, operation: @Sendable () -> ChildTaskResult) -> Bool func next() -> ChildTaskResult? func nextResult () -> Result<ChildTaskResult, Failure>? var isEmpty : Boolfunc waitForAll ()func makeAsyncIterator () -> ThrowingTaskGroup<ChildTaskResult, Failure>.Iterator func allSatisfy ((ChildTaskResult) -> Bool) -> Bool func compactMap <ElementOfResult>((ChildTaskResult) -> ElementOfResult?) -> AsyncThrowingCompactMapSequence<ThrowingTaskGroup<ChildTaskResult, Failure>, ElementOfResult> func compactMap <ElementOfResult>((ChildTaskResult) -> ElementOfResult?) -> AsyncCompactMapSequence<ThrowingTaskGroup<ChildTaskResult, Failure>, ElementOfResult> func contains(ChildTaskResult) -> Bool ChildTaskResult conforms to Equatable.
ChildTaskResult がEquatableに準拠する時に利用可能です。
func contains(where: (ChildTaskResult) -> Bool) -> Bool func drop(while: (ChildTaskResult) -> Bool) -> AsyncDropWhileSequence<ThrowingTaskGroup<ChildTaskResult, Failure>> func dropFirst (Int) -> AsyncDropFirstSequence<ThrowingTaskGroup<ChildTaskResult, Failure>> func filter((ChildTaskResult) -> Bool) -> AsyncFilterSequence<ThrowingTaskGroup<ChildTaskResult, Failure>> func first(where: (ChildTaskResult) -> Bool) -> ChildTaskResult? func flatMap <SegmentOfResult>((ChildTaskResult) -> SegmentOfResult) -> AsyncThrowingFlatMapSequence<ThrowingTaskGroup<ChildTaskResult, Failure>, SegmentOfResult> func flatMap <SegmentOfResult>((ChildTaskResult) -> SegmentOfResult) -> AsyncFlatMapSequence<ThrowingTaskGroup<ChildTaskResult, Failure>, SegmentOfResult> func map<Transformed>((ChildTaskResult) -> Transformed) -> AsyncThrowingMapSequence<ThrowingTaskGroup<ChildTaskResult, Failure>, Transformed> func map<Transformed>((ChildTaskResult) -> Transformed) -> AsyncMapSequence<ThrowingTaskGroup<ChildTaskResult, Failure>, Transformed> func max() -> ChildTaskResult? ChildTaskResult conforms to Comparable.
ChildTaskResult がComparableに準拠する時に利用可能です。
func max(by: (ChildTaskResult, ChildTaskResult) -> Bool) -> ChildTaskResult? func min() -> ChildTaskResult? ChildTaskResult conforms to Comparable.
ChildTaskResult がComparableに準拠する時に利用可能です。
func min(by: (ChildTaskResult, ChildTaskResult) -> Bool) -> ChildTaskResult? func prefix(Int) -> AsyncPrefixSequence<ThrowingTaskGroup<ChildTaskResult, Failure>> func prefix(while: (ChildTaskResult) -> Bool) -> AsyncPrefixWhileSequence<ThrowingTaskGroup<ChildTaskResult, Failure>> func reduce<Result>(Result, (Result, ChildTaskResult) -> Result) -> Result func reduce<Result>(into: Result, (inout Result, ChildTaskResult) -> Void) -> Result var isCancelled : Boolfunc cancelAll ()typealias ThrowingTaskGroup.Element struct ThrowingTaskGroup.Iterator typealias ThrowingTaskGroup.AsyncIterator func async(priority: TaskPriority?, operation: @Sendable () -> ChildTaskResult) func asyncUnlessCancelled (priority: TaskPriority?, operation: @Sendable () -> ChildTaskResult) -> Bool struct Taskstruct TaskGroup struct TaskPriority struct UnsafeCurrentTask